2648080

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 6249600

約数和(自身を除く): 3601520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 419, 632, 790, 838, 1264, 1580, 1676, 2095, 3160, 3352, 4190, 6320, 6704, 8380, 16760, 33101, 33520, 66202, 132404, 165505, 264808, 331010, 529616, 662020, 1324040, 2648080]

約数ペア:

[(1, 2648080), (2, 1324040), (4, 662020), (5, 529616), (8, 331010), (10, 264808), (16, 165505), (20, 132404), (40, 66202), (79, 33520), (80, 33101), (158, 16760), (316, 8380), (395, 6704), (419, 6320), (632, 4190), (790, 3352), (838, 3160), (1264, 2095), (1580, 1676)]